Holiday Planning & Ideas Halloween Halloween Projects & Crafts Pet Costumes How to Make a Spider-Dog Pet Costume Martha's beloved French bulldogs are all dressed up for Halloween. Francesca is disguised as a devious black widow spider in this festive costume. By Martha Stewart Editors Martha Stewart Editors Facebook Instagram Twitter Website An article attributed to "Martha Stewart Editors" indicates when several writers and editors have contributed to an article over the years. These collaborations allow us to provide you with the most accurate, up-to-date, and comprehensive information available.The Martha Stewart team aims to teach and inspire readers daily with tested-until-perfected recipes, creative DIY projects, and elevated home and entertaining ideas. They are experts in their fields who research, create, and test the best ways to help readers design the life they want. The joy is in the doing. Editorial Guidelines Updated on June 16, 2020 Share Tweet Pin Email Amp up your four-legged friend's Halloween style this season with our Spider-Dog Pet Costume. The spider's bulbous body and angular legs are made of felt; once assembled, the costume is sewn onto a doggy-size T-shirt. What You'll Need Materials Basic sewing supplies 36-inch square black felt Orange felt Fill Knitting needle Fabric glue Black dog T-shirt Body, leg, and diamond templates Instructions Photocopy the body, leg, and diamond templates and cut them out. Using the templates as guides, cut two body pieces and 16 leg pieces from the black felt; cut two diamond pieces from the orange felt. To make each leg, pin two leg pieces together and sew; using the knitting needle, stuff tightly with fill. Sew the body pieces together, leaving a small opening for the fill. Stuff the body, and sew the opening closed. Glue the two diamonds to the top body piece to make an hourglass shape. Place each leg on the body with the open ends sandwiching the body; hand-sew legs to the body. Next, sew the body to the center back of the T-shirt; tack along contour of the body to stabilize.